素/聚乙烯醇) 水凝用于检测和有效清除微塑料
Xiaohong Li1, Qi Xia1, Yanli Leng1
1School of Chemical Engineering, Guizhou Minzu University, Guiyang, Guizhou 550025, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|June 23, 2025
概括
来自氨基化木质素的新型生物基水凝有效地从水中去除微塑料. 这种可持续吸附剂显示出高容量和效率,即使在多次使用后,也为净化水提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 聚合物化学 聚合物化学
背景情况:
- 微塑料污染是一个日益严重的环境问题,需要有效的清除策略.
- 生物基聚合物lignin具有作为功能材料的前体的潜力.
- 开发可持续吸附剂对于减轻环境污染至关重要.
研究的目的:
- 为了合成和表征一种新的生物基水凝从氨基化木质素和聚乙烯醇).
- 评估水凝对各种微塑料类型的吸附性能,包括聚乙烯微塑料 (PSMP).
- 评估水凝在不同水矩阵中的效率及其对可持续应用的可重复使用性.
主要方法:
- 从竹粉中提取红素,然后进行化和氨化.
- 通过氨基化木质素和聚乙烯醇交叉连接的凝合成.
- 使用SEM,FTIR和N2吸附-脱附的特性;对微塑料进行吸附研究.
主要成果:
- 合成的水凝显示出PSMP的高最大吸附能力为288.6 mg/g,遵循伪二次动力学和兰迈尔异热法.
- 在5个再生周期后,水凝保持了87.64%的效率.
- 在各种水矩阵中观察到多种微塑料类型 (PEMP,PPMP,PVCMP,PAMP) 的有效吸附,PSMP的吸附率超过92%,PAMP的吸附率超过96%.
结论:
- 基于氨基素的氨基凝是一种高效且可重复使用的吸附剂,用于清除微塑料.
- 这种生物基材料提供了一种可持续和环保的战略,用于应对各种环境中的微塑料污染.
- 该研究为开发针对水处理应用中小尺寸微塑料的先进吸附剂提供了必要的数据.
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